/**
 * One frame of the "Preparing preview…" ripple: a soft drifting glow under an
 * 18px lattice whose points swell along an outward wave. DOM-free and
 * self-contained (it closes over nothing), so the web canvas effect and the
 * native preview document (which embeds its source) draw the same thing.
 */
export declare function paintPreviewLoading(context: CanvasRenderingContext2D, width: number, height: number, time: number, ink: string, glowColor: string): void;
/** The ripple's private ink and glow, tuned to the app's teal on a neutral ground. */
export declare const PREVIEW_LOADING_COLORS: {
    readonly dark: {
        readonly ink: "#9fdccd";
        readonly glow: "#5fb8a3";
        readonly background: "#1b1b1b";
    };
    readonly light: {
        readonly ink: "#5f8f84";
        readonly glow: "#9fe3d3";
        readonly background: "#f9f9f9";
    };
};